/Engine/Plugins/FX/Niagara/Source/Niagara/Classes/NiagaraDataInterfaceRWUtils.h
void GetChannelStrings ( int AttributeIndex, int AttributeNumChannels, [FString](API\Runtime\Core\Containers\FString) & NumChannelsString, [FString](API\Runtime\Core\Containers\FString) & AttrGridChannels ) const